an other bike racking system – where can i get 31mm channel from

coincidentally to the thread on bike racking recently I purchased a few of these

https://www.icetoolz.eu/en/icetoolz-suspension-hook-with-rollers-p678/a9243

intending to hook the kids bikes up and as non of the bikes weigh >11-12 kg they will be adequate, however – I am really struggling to find 31mm channel

it needs to be 31mm wide with a 12mm opening – does anyone have any idea where i can get this in the UK ?

Are these any good?

https://www.rollingcenter.co.uk/products/rolling-center-80z-galvanised-monorail-track

https://www.runners-uk.com/series-20-2m-galvanized-steel-top-track/?attribute_length=3&tw_source=google&tw_adid=&tw_campaign=21170402633&gad_source=1&gclid=Cj0KCQiA6Ou5BhCrARIsAPoTxrBQltJhr1yu4zffuf1DHtX5jiQwyHN-XMzlAqljcHaNZLa2pk6KwZoaAvq3EALw_wcB

Might be worth giving them a call.

I used rolling centre for my build, nice and quick.

You’d really be better sending yours back or selling on and getting the ones in the original thread. The Unistrut that uses is a standard industrial product and very cheap.

I needed a few metres for the bike rack I made for my van, similar application for roller bearings to run in, and it was bought from stock at my local electrical supplier.